function
ac
alternative
backup
bank
battery
bulb
bus
charge
conversion
current
diode
distance
effect
electricity
electronic
emit
emitting
energy
engergy
equipment
green
illumination
indicator
led
light
mobile
pack
panel
personal
photoelectric
photoemission
portable
ports
power
renewal
serial
silicon
solar
sports
storage
supply
switch
terminals
travel
universal
usb
volume